Roll-box for cotton-gins



(No Model.) W. H. SAWYER & W. O. WATSON.

ROLL BOX FOR COTTON GINS.

Patented Dec. 13

WITNESSES N. PETERS. Phclo-Lllhogmphcn Winhinglml. n. c.

UNITED Y STATES PATENT OFFrcE.

WALTER H. SAWYER, OF FORT VALLEY, AND WILLIAM O. WATSON, OF

ALBANY, GEORGIA.

ROLL-BOX FOR COTTON-GINS.

SPECIFICATION forming part of Letters Patent No. 250,680, dated December 13, 1881,

Application filed April 27, 1881.

To all whom it may concern:

Be it known that we, WALTER H. SAWYER, of Fort Valley, Houston county, Georgia, and WM. 0. WATSON, of Albany, in the county of Dougherty and State of Georgia, have invented certain new and useful Improvements in Roll-Boxes for Cotton-Grins and we do hereby declare that the following is a'full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Figure 1 is a perspective view. Fig. 2 is a vertical sectional view; and Fig. 3 is a vertical transverse section on the line at m, Fig. 2.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention has relation to the roll-boxes of cotton-gins; and it consists in certain improvements in the construction of the same, which will be hereinafter fully described, and particularly pointed out in the claims.

The construction and arrangement of parts constituting our invention is as follows:

A represents the roll box, which is constructed mainly in the usual well-known manner, consisting of parts known technically as the heads or ends B B, ribs 0 O, rib rails or bars D D, back circle, E, and front circle, F, having the seed-board G.

H is the slot or opening between the front and back circles, through which the cotton roll is fed to the box.

Now, it is well known that in order to clean the seed well out and gin fast it is necessary to keep what is termed a tight roll also, that the choking or breaking of the cotton-roll is caused mainly by the pressure and rubbing of the roll against the stationary back circle. To obviate this we arrange, in lieu of the said back circle, a series of independent frictionrollers, I, which, when the cotton-roll presses upon them, will revolve, and thus relieve the roll of the friction to which it is exposed in roll-boxes of the ordinary construction.

The rollers I, which may be made of wood,

(No model.)

metal, or any other suitable material, are adjusted in suitable perforations, J, in the heads of the box, which, if made of wood, should be provided with metallic faciugs in order to less en the wear.

The journals K of the rollers, which project beyond the heads of the roll-box, are mounted in boxes L, secured upon the sides of the latter, tl1e front sides of said boxes being open, as shown at M, for the purpose to be hereinafter described.

The rollers, as will be seen, extend through the entire length of the roll-box. They may be made of any desired diameter, usually about one and a half inch; and when made of wood, which we prefer in order to insure lightness and cheapness, they should be provided with metallic journal ends for the purpose of lessening the wear and friction.

The rollers should be adjusted so closely together that there will be no possibility of their being choked or clogged. At the same time they must be able to revolve freely independently of each other.

The operation of our invention will be readily understood. It is simple, durable, inexpensive, and easily applied to all ordinarilyconstructed cotton-gins.

We are aware that rollers have been heretofore arranged in roll-boxes and driven by pulleys and belts for the purpose of prevent ing choking. Aside from the additional complication and expense, such devices are acknowledged to be defective, and they are in no way claimed by us. By arranging the friction-rollersindependently, as herein described, an absolutely satisfactory result is obtained.

It should be stated that by journaling the rollers in boxes upon the outside of the heads of the roll-box, as herein shown, instead of in the heads, as might be done, sand and grit are prevented from accumulating in the bearings, inasmuch'as they will work out through the open front sides of the boxes.

We are aware of the patent to Robert Mc- Kenna, No. 124,278, of March 5, 1872, and we claim nothing therein shown.

Having thus described our invention, we In testimony that we claim the foregoing as claim and desire to secure by Letters Patent our own we have hereto affixed our signatures,

of the United Stateseach in the presence of two witnesses.

1. The boxes L, having open front sides, M, WALTER H. SAWYER. 5 as and for the purpose shown and specified. WILLIAM O. WATSON.

2. As an improvement in roll-boxes for cot- Witnesses as to W. H. Sawyer:

ton-gins, the box A, having friction-rollers I I, O. H. MILLER,

extending through the heads thereof and L. J. GOODIN.

mounted inboxes L, having open front sides, Witnesses as to W. 0. Watson:

10 M, as herein described, for the purpose shown RICHARD M. EASTUS,

and specified. Mox ROBINSON. 

